I hear you jimh425, we will see how that goes. I am also thinking of installing a sheet (to fit) of plascell secured to the bottom of this carrier for that purpose. Getting closer to the road so I would have to watch out for flooded streets etc. Maybe cut triangles off at the corners to allow drainage if water were to get in. Maybe I will just leave it open and see how it goes. being it is facing down I don't think it will get much of anything on it. I can always wash it down if that was the case. Were parked more than driving as we set this up as a destination rig.